package cn.spark.study.core

import org.apache.spark.SparkConf
import org.apache.spark.SparkContext

/**
 * @author Administrator
 */
object AccumulatorVariable {

  def main(args: Array[String]){
    val conf = new SparkConf()
        .setAppName("AccumulatorVariable")
        .setMaster("local")
    val sc = new SparkContext(conf)
    
    val sum = sc.accumulator(0)
    
    val numberArray = Array(1,2,3,4,5)
    val numbers = sc.parallelize(numberArray, 1)
    numbers.foreach { num => sum += num }
    
    println(sum)
  }
}